Probing confinement enhanced precatalyst association in Pd catalyzed enyne cycloisomerizations by advanced NMR spectroscopy (B08*)

• Subject Area: Inorganic Molecular Chemistry - Synthesis and Characterisation ; Organic Molecular Chemistry - Synthesis and Characterisation ; Technical Chemistry
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 358283783

Palladium hydrides that catalyze enyne cycloisomerization reactions, typically formed in situ by reaction of weak Brönsted acids with Pd(0) complexes, are often only present in small equilibrium concentrations. The proportion of active catalyst as well as the catalytic selectivity can be, however, vastly increased through confinement due to the higher local concentration and interaction with the pore walls. In this project, we will use advanced MAS NMR techniques (such as HETCOR and REDOR) to observe the effect of confinement on the equilibrium of palladium hydride formation in pores and explain the effect on the catalytic activity and selectivity for enyne cycloisomerization.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1333: Molecular Heterogeneous Catalysis in Confined Geometries
• Applicant Institution: Universität Stuttgart
• Project Head: Professor Dr. Deven Estes